Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / third_party / boringssl / include / openssl / rand.h

diff --git a/legacy-libs/grpc/deps/grpc/third_party/boringssl/include/openssl/rand.h b/legacy-libs/grpc/deps/grpc/third_party/boringssl/include/openssl/rand.h
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+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_RAND_H
+#define OPENSSL_HEADER_RAND_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Random number generation.
+
+
+// RAND_bytes writes |len| bytes of random data to |buf| and returns one.
+OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len);
+
+// RAND_cleanup frees any resources used by the RNG. This is not safe if other
+// threads might still be calling |RAND_bytes|.
+OPENSSL_EXPORT void RAND_cleanup(void);
+
+
+// Obscure functions.
+
+#if !defined(OPENSSL_WINDOWS)
+// RAND_set_urandom_fd causes the module to use a copy of |fd| for system
+// randomness rather opening /dev/urandom internally. The caller retains
+// ownership of |fd| and is at liberty to close it at any time. This is useful
+// if, due to a sandbox, /dev/urandom isn't available. If used, it must be
+// called before the first call to |RAND_bytes|, and it is mutually exclusive
+// with |RAND_enable_fork_unsafe_buffering|.
+//
+// |RAND_set_urandom_fd| does not buffer any entropy, so it is safe to call
+// |fork| at any time after calling |RAND_set_urandom_fd|.
+OPENSSL_EXPORT void RAND_set_urandom_fd(int fd);
+
+// RAND_enable_fork_unsafe_buffering enables efficient buffered reading of
+// /dev/urandom. It adds an overhead of a few KB of memory per thread. It must
+// be called before the first call to |RAND_bytes| and it is mutually exclusive
+// with calls to |RAND_set_urandom_fd|.
+//
+// If |fd| is non-negative then a copy of |fd| will be used rather than opening
+// /dev/urandom internally. Like |RAND_set_urandom_fd|, the caller retains
+// ownership of |fd|. If |fd| is negative then /dev/urandom will be opened and
+// any error from open(2) crashes the address space.
+//
+// It has an unusual name because the buffer is unsafe across calls to |fork|.
+// Hence, this function should never be called by libraries.
+OPENSSL_EXPORT void RAND_enable_fork_unsafe_buffering(int fd);
+#endif
+
+#if defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
+// RAND_reset_for_fuzzing resets the fuzzer-only deterministic RNG. This
+// function is only defined in the fuzzer-only build configuration.
+OPENSSL_EXPORT void RAND_reset_for_fuzzing(void);
+#endif
+
+
+// Deprecated functions
+
+// RAND_pseudo_bytes is a wrapper around |RAND_bytes|.
+OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len);
+
+// RAND_seed reads a single byte of random data to ensure that any file
+// descriptors etc are opened.
+OPENSSL_EXPORT void RAND_seed(const void *buf, int num);
+
+// RAND_load_file returns a nonnegative number.
+OPENSSL_EXPORT int RAND_load_file(const char *path, long num);
+
+// RAND_file_name returns NULL.
+OPENSSL_EXPORT const char *RAND_file_name(char *buf, size_t num);
+
+// RAND_add does nothing.
+OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy);
+
+// RAND_egd returns 255.
+OPENSSL_EXPORT int RAND_egd(const char *);
+
+// RAND_poll returns one.
+OPENSSL_EXPORT int RAND_poll(void);
+
+// RAND_status returns one.
+OPENSSL_EXPORT int RAND_status(void);
+
+// rand_meth_st is typedefed to |RAND_METHOD| in base.h. It isn't used; it
+// exists only to be the return type of |RAND_SSLeay|. It's
+// external so that variables of this type can be initialized.
+struct rand_meth_st {
+  void (*seed) (const void *buf, int num);
+  int (*bytes) (uint8_t *buf, size_t num);
+  void (*cleanup) (void);
+  void (*add) (const void *buf, int num, double entropy);
+  int (*pseudorand) (uint8_t *buf, size_t num);
+  int (*status) (void);
+};
+
+// RAND_SSLeay returns a pointer to a dummy |RAND_METHOD|.
+OPENSSL_EXPORT RAND_METHOD *RAND_SSLeay(void);
+
+// RAND_get_rand_method returns |RAND_SSLeay()|.
+OPENSSL_EXPORT const RAND_METHOD *RAND_get_rand_method(void);
+
+// RAND_set_rand_method does nothing.
+OPENSSL_EXPORT void RAND_set_rand_method(const RAND_METHOD *);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_RAND_H